Brush



June 1937. R. E. WOOD 2,088,134

BRUSH Filed March 30, 1955 Zfioualb Z. 5900b Inventor Patented June 1937 I UNITED STATES PATENT OFFICE BRUSH Ronald Ellsworth Wood, Chicago, Ill. App ication March so, 1935, Serial No. iasas a claims} (01115-160) My present invention relates to brushes and particularly to scrubbing brushes of the type which is used for cleaning vats and, more especially, for cleaning coilpasteurizer vats, although the brush is adaptable for any scrubbing or cleaning purpose, over smooth or unevensurfaces.-

An object of the present invention rests in the provision of a pair of flexible brushes independently adjustable to the surface upon which they work and which has a supporting handle between them by means of which the brushes are applied to the surface to be scrubbed.

Another object provides for scrubbing brushes that may be used to insure against scratching or marring of finished surfaces; as often found in vats, especially in the vats utilized in pasteurizing, which may be of glass or any finish .where it is important to preserve the surface finish.

In the accompanying drawing, Figure 1 is a perspective view showing my preferred construction; Figure 2 is a plan view, enlarged, and showing a portion of the lower end of the handle only; and Figure 3 is a perspective of the shaft for supporting the brush members and also with an exsuitable handle.

The general design of my invention consists in the utilization of a handle member Ill approximately five feet in length, curved on its lower end, and of sufiicient thickness to insure strength for the purpose in mind. On the lower end of the handle I bore a hole transversely a short distance back from the extreme end, as at l I, to receive a shaft l2. For some distance back of the hole so bored and beginning at the extreme lower end. of the handle, Irun a saw-cut to receive a tongue member l3 which is welded or otherwise formed on the shaft I2. Rivets I l insure that the tongue, after insertion, will be rendered in a substantial and fixed manner with the handle permitting the shaft l2 to stand transversely of the longitudinal axis of the handle and supporting a pair of brushes [5 and I6. These brushes are bored through their flexible backs, as at H, to

fit a reduced end l8 of the shaft l2. .The brush backs also are countersunk as at l9 and 20. A washer being inserted over the shaft I8 and resting against a shoulder 2| will be received in the countersunk portion I9.

A washer 22 and a nut 23 will be received in the countersunk portion 20 thus providing against any projecting metal part and saving any chance of scratching or marrlng any surface that the brushes might contact.

5 The two brushes thus mounted are independtension tongue therefrom for attachment to a ent of each other and free to adjust themselves to any uneven surface, or surface different from that beingworked upon by the other brush.

Tension maybe secured, if necessary, by adjusting the nut 23 and pressure through the 5 handle will insure that the two brushes-will adjustthemselves to their working surface. The rivets l4 passing through the handle will also pass through the holes l4 in the tongue I3 to insure a rigid connection with the handle l0 and 10v since the tongue I3 is made equal or slightly less in width than the handle, no metalwill touch against any object being worked upon.

The individual brushes of my invention are made, preferably, with a flexible back, such as 15 vulcanized rubber, into which the bristles may be set and vulcanized therein to insure longer wear. The back, .however, may be formed of a solid piece of rubber, shaped in the manner shown in Figure 1 and having an increased vertical cross 20 sectional area at or near the center of the brush to insure a proper support for maintaining the brush upon its pivotal shaft I 8. The ends also are made a bit heavier than the intermediate portions and this insures flexibility on either side of the shaft support so that when the brush is used in a vat having a curved or roundedbottom, or when itis'necessary to force the brush into close quarters, a flexing will take, place that will insure the bristles .of the brush reaching all surfaces effectively. The rubber back will also give on contact with pasteurizing coils or other obstructions, and will not mar or scar the coils, nor mar any other surface of the vat which it contacts. 35 I While it is my intention to provide a scrubbing brush which will easily and quickly clean a. coil pasteurizer vat, it may be useful for many other purposes, such as scrubbing floors, woodwork, or; any other surface in which a similar operation 40 may be necessary or desirable. 7

When the brushes become worn or unfit for further use they may be removed by taking off the nut 23 and the washer, and by refitting a new brush to the reduced shaft I8, the brush is re- 45 newed for continued use.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A brush comprising a handle having a cross 50 bore near one end thereof and a slot in said handle and intercepting the cross bore, a transverse shaft having a tongue at right angles thereto, 'said shaft fitting in said bore and said tongue in said slot, securing means for positively anchoring the 10 reduced end extensions on the cross shaft forming a shoulder, a washer against said shoulder and. threaded ends for said shaft, a pair of brushes having a transverse bore through the backs of the brushes and approximately centered thereto and 15 corresponding to the end extensions on the shaft and countersunk at each end, said brushes being fitted to said end extensions and retaining means therefor eng sins the threaded ends of the cross shaft. 3. A brush comprising a handle, one end of said andle curved away from the longitudinal axis thereof, a cross-shaft spaced back from the extremity of the curved end and rigidly secured thereto, reduced end extensions upon the crossshaft, a pair of brushes mounted upon said reduced end extensions, and having a transverse countersunk bore through the central portion of the backs of the brushes for the reception of the reduced end extensions of the cross-shaft, said brushes having enlarged central and end portions and retaining and tensioning means for the brushes engaging the ends of said shaft.

RONALD HLSWORTH WOOD. 

